Polyolefin-based compositions, adhesives, and related multi-layered structures prepared therefrom

Abstract

The present disclosure provides a polyolefin-based composition suitable for use as adhesives and/or tie-layer adhesive compositions as well as a multi-layered structure made from and/or containing the polyolefin-based composition. The polyolefin-based composition is made from and/or contains (a) a grafted polyolefin composition, (b) a first polymer composition, (c) a polypropylene-containing blend composition, and (d) optionally, an additives composition having one or more additives.

What is claimed is: 
     
       1. A polyolefin-based composition comprising:
 (a) a polypropylene grafted with maleic anhydride; 
 (b) a polymer composition comprising 10-90% by weight of a semicrystalline polypropylene having a crystallinity of more than about 30% by weight and less than about 70% by weight and 10-90% by weight of an ethylene propylene rubber copolymer comprising an ethylene content of about 20-65% by weight, based on the total weight of the ethylene propylene rubber. 
 
     
     
       2. An adhesive comprising the polyolefin-based composition of  claim 1 . 
     
     
       3. A multi-layered structure comprising the adhesive of  claim 2 .